I wasn't a huge fan of the transition between cool-down guns and ammo-using guns in Mass Effect 2, but none of that matters if each copy of the game came with one of these Volpin Props-created replica rifles.

Most of this rifle was made from cheap-ish parts, which doesn't matter, since it's put together with such precision and care—then painted to look like the real thing. [Volpin Props via Nerd Approved]